Hear No Evil
Old Morty Zimmerman had serious hearing problems for years. He went to the doctor and the doctor was able to have him fitted for a set of hearing aids that miraculously allowed Morty to hear again – perfectly.
Morty went back a month later to the doctor and the doctor said, "Your hearing function is near 100%. Your family must be really pleased that you can hear again."
Morty replied, "Oh, I haven't told my family yet. I just sit around and listen to their conversations. I've changed my will three times!"